Contax 645 mount Standard zoom
Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T*
Quick answer
The Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T* is a standard to short telephoto zoom lens covering 45-90mm at f/4.5 for the Contax 645 mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
- Full frame
- APS-C (68–135mm equiv.)
- Micro Four Thirds (90–180mm equiv.)
- Other systems via mount adapter
- Focal
- 45–90mm
- Aperture
- f/4.5–32
- Weight
- 1140g
- Filter
- 95mm
- Min focus
- 0.5m
What 45-90mm sees
- Full frame crop 1.0×
- 27–51.4° 22.6–43.6° horizontal
- APS-C crop 1.5× → 68–135mm
- 18.2–35.5° 15.2–29.9° horizontal
- Micro Four Thirds crop 2.0× → 90–180mm
- 13.7–27° 11.4–22.6° horizontal
Diagonal angle of view. Frames drawn to scale at 45mm (and 90mm). Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera), not measured.
Open the field-of-view calculatorContax Zeiss 45-90mm f/4.5 Vario-Sonnar T* specifications
Optics
- Focal length
- 45-90mm
- Maximum aperture
- f/4.5
- Minimum aperture
- f/32
- Format coverage
- Medium format
- Optical construction
- 12 elements in 10 groups
Focus
- Minimum focus distance
- 0.5 m
Physical
- Filter thread
- 95 mm
- Weight
- 1140 g
- Length
- 115 mm
- Diameter
- 102 mm
General
- Brand
- Contax
- Mount
- Contax 645
- Lens type
- Zoom
Specification source: en.wikipedia.org
What can you shoot with the Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T*?
At 45-90mm this is a standard to short telephoto zoom, which typically suits:
- Everyday and street photography
- Natural-perspective portraits
- Documentary and travel work
- Portraits with a flattering perspective
- Events and weddings
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
Frequently asked questions
What mount does the Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T* use?
It uses the Contax 645 mount, so it fits Contax 645 cameras directly and can be used on other systems through a mount adapter.
What is the focal length of the Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T*?
It zooms across 45-90mm with a maximum aperture of f/4.5. That makes it a standard to short telephoto lens.
Is the Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T* a prime or a zoom lens?
It is a zoom lens covering 45-90mm, so you can reframe without moving. Its maximum aperture is f/4.5.
What is the Contax Zeiss 45-90mm f/4.5 Vario-Sonnar T* equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 68–135mm on full frame, with a 15.2–29.9° horizontal and 18.2–35.5° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 90–180mm on full frame, with a 11.4–22.6° horizontal and 13.7–27° diagonal field of view. These figures are calculated from the focal length and crop factor.
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